# Senior C++ Software Engineer at Reactive Markets

- Company: Reactive Markets
- Status: Open
- Workplace: Remote
- Location: Remote, UK · Remote
- Level: Senior
- Discipline: Backend
- Employment: Full-time
- Posted: 2026-10-19
- Skills: C++
- Apply: https://jobs.ashbyhq.com/reactivemarkets/5d27b44b-7a55-4c38-b23d-278c2cd527c7

## Description

SENIOR C++ SOFTWARE ENGINEER

Remote (UK-based) | Full-Time





ABOUT US

Reactive Markets is the 2026 OTC Trading Platform of the Year (Risk.net http://Risk.net). Our network handles over $75 billion in daily trading volumes across FX, Equities, and Cryptocurrency, connecting 60+ of the world's leading liquidity providers.

We build trading systems that operate at the edge of what's technically possible — where nanoseconds matter and a dropped message costs real money. Our engineering team is small, senior, and deeply invested in the craft of building cutting edge, reliable, high-performance systems.




THE ROLE

We're looking for a Senior C++ Software Engineer who can shape the technical direction of our Switchboard trading platform while continuing to write excellent code. You'll work on the most performance-critical components — pricing engines, connectivity gateways, market-data systems, and the messaging layer that ties them together — and you'll have a direct influence on architectural decisions that affect the entire platform.

This is not a role where you write code and throw it over a wall. You build it, you test it, you deploy it, you support it in production, and you improve it. Our engineers own the full lifecycle — from design through to operational excellence. When something breaks at 4pm on a Friday, you're part of the team that investigates and fixes it.

Beyond your own delivery, you'll provide technical oversight across the team — reviewing designs, challenging assumptions, and mentoring engineers who are earlier in their careers. You'll help us maintai

More Reactive Markets roles: https://deviantjobs.com/companies/reactive-markets